Switch



M. GUI-:TT

SWITCH Filed Feb. 19, 1927 Patented Aug. "7, 192g.

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MONROE GUETT, OF

MANUFACTURING CONNECTICUT.

HARTFORD, CONNECTICUT, ASSINOR TO HART & HEGEMAN COMPANY, OE HARTFORD, CONNECTICUT, A CORPORATION OF swrrcn.

Application filed February 19, 1927.- Seral No. 169,518.`

This invention relates tocertain improvements in snap switches', in' which a handled switch-lever actuates, through a sprin the crank on which the blades are mounted.

The object of my invention is to so con-A struct a switch of the type mentioned above that the switch-lever will rock on a bearing in the bottom of the base, while the crank will rock in bearings on the cross-member. The spring that snaps the crank from one position to the-other tends to hold the lever and the crank in their bearings.

In the accompanying drawing: p

Fig. 1 is a side view of my improved snap switch Fig. 2 is a plan view;

Fig. 3 is a longitudinal sectional view on the line 3;-3, Fig. 2; s

Fig. 4 is a longitudinal sectional View on the line 4 4, Fig. 2;

Fig. 5 is a transverse sectional view on the line 5-5, Fig. 2;

Fig. 6 is a plan view ot the base showing the pivot on which the switch-lever rocks;

Fig. 7 is a detached perspective view of the switch-lever;

Fig. 8 vis a detached perspective view ot the crank;

' Fig. 9 is a detached side view of the crossmember; and

Fig. 10 is an enlarged view showing the lever, crank, and connecting spring.

The base 1 of the switch structure can be made of porcelain or other material molded into shape as shown, having a cavity 2 for the switch mechanism.

In the -bottom of the cavity in the present inst-ance is a longitudinal groove 3, and at the centre is a transverse groove 4 in which is a round barrr, preferably of metal, which forms a bearing for the switch-lever 6.

This switch-lever is made as shown in Fig. 7, and has a narrow open framework 7 on which is molded the handle 8 of any form desired having lateral shields, which close the opening in the metallic cross-member 9.

The lower portion 7 'of the lever extends into the longitudinal groove 3 in the base when in either of its two positions.

The cross-member 9 is secured to the base by screws 10-10 and has openings for the reception of the means for securing the switch structure to a Wall or other object.

Depending Jfrom thel cross-member 9 are two bearings 11-11for the crank 12. This ordinary manner.

present instance, and has two notches 13 into which extend the bearings 1.1-11. The bearings have tapered notches 14 into which the crank extends. The crank is U-shaped in the present instance and extends through the open framework of the switch-lever.

A coiled spring 15 connects the cross bar 16 of the crank with-the lever, the end of the spring being threaded through an eye 17 in a portion of the lever directly under the handle, as shown in Figs. 3 and 10. .The spring is under tension and forces the lever against its bearing in the bottom of the cav ity inthe base, and forces the crank against its bearings in the cross-member, making a very substantial and simple construction.

On the rocker are two blades 18 and 19, which are insulated from the rocker in the The blades are so arranged as to engage the terminals 2O and 21 which are secured to thebase by screws, the screws 22 forming the binding screws for the wires.

lt will be noticed that the spring is in the path of the inside of the switch-lever frame when in either of its two positions. By this arrangement the lever, during the first part of its' movement, gives a positive initial movement to the spring and the crank. This insures the Pmovement of the crank on its pivot, after which the spring throws the crank to its other position.

It will be understood that the construction and arrangement ot the cont-act arms and terminals may be modified without departing from the essential features of the invention,

and that the bearing for the switch-lever may be formed integral with the base, or the switch-lever may have a projection adapted to a recess in the base.

`While the vpart '12 vis termed a crank, it will be understood to cover any form oi rocker pivoted in the manner set forth.

1. The combination in a switch structure, of a base having a cavity therein; a pivot bearing at'the bottom of the cavity; a member extending across the cavity of the base; a bearing on the cross-member; 'a switchlever mounted on `the pivot in the cavity of the base; a crank pivotally mounted in the bearing on the cross-member; a spring'connected to the lever and the crank and tending to hold the two parts on their respective Qti bearings; blades actuated by the crank; and member also having'ia bearing; a switch- I Teninalsvonthe base. l lever mounted on the .bearing in the base; a

2. The combination in a switch structure7 blade-carrying crank mounted in the bear- 35' of a base, having a cavity therein; a pivot ing on' the crossemember; and means 'conbearing at the bottom of the cavity; a meme necting the .two' parts. A ber extending across the cavity and having 5. The combination in a'switelijnstructure, a bearing; an open switch lever mounted Yon i Yof a basehavingacavity therein, and having Y; `the' ivot in the cavity ofthe base; 'acra'nk a longitudinal Ymid-ftransversev groove`in the 40 t .Tpivotagv inountc'iiiliebearingof the bottom of the cavity; a. pivot bar in the 10 .cross-member and extending through the transverse groove; across-membersecured to open switch-lever; and a spring connecting kthe base and having a central longitudinal -Y the two members, the spring and crank beopening. therein-and having ai depending 'ing so located that on-theiirstmovement'oV bearing Yonf"eaclgside"'of said opening; a, 45 the switch the crank will'be given an initial switch-lever having an open framework and movement, the spring completing the move-v ,ahandle, said-lever being pivotally mounted ment. on the bearing in the bottom of the cavity 3. The combination in a switch structure, inthe base, the handle of the lever extending of a base having a cavity therein; a transthrough the opening in the'cross-member; a 50 verse groove in the bottom of the cavity; a U-shaped crank extending through the open bar inthe groove forming a bearing; a crossframework of the lever and mounted 'on the member attached to the base and having an bearings of the cross-member; a spring conopening therein; a switch lever pivot-ally nected to the handle end of the lever and mounted o n the bar and extending through to the cross-bar of the U-shaped crank; l554 p the opening in the cross-member; bearings blades actuated by the crank; and terminals depending from the cross-member; a U- on the base.

shaped crank engaging the bearings of the 6. VThe combination in a! switch structure, cross-member; a tension spring connected to of a recessed base; and a. switchglever having Y the switch-lever and the crank, tending to a frame-work and a centre bearing atmits hold both parts to their bearings; blades on inner end arrangedV to rock Iat the bottom Y the crank; and terminals yon the base.` ofthe recess in the base, said switchl lever 4. The combination in a switch structure; having a handle on its outer end; of a base havig'a bearing therein; a cross'- MONROE GUETT. 

